Rotary pump



(No Model.)

J. M. TAYLOR.

VRQTAJELY PUMP. No. 254,069. Patented Feb..2,1,1882.

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' je@ *I 4 Unirse STATES PATENT OFFICE.,

JOHN MITCHELL TAYLOR, OF HARTFORD, CONNECTICUT.

ROTARY PUM P.

SPECIFICATION forming part of Letters Patent No. 254,069, dated February21, 1882.

V Application filed August 18,1881. (Nomodel.) l

To all 'whom 'tt may concern Be it known that I, JOHN MITCHELL TAY- LOR,a citizen otl the United States, residing at Hartford, in the county ofHartford and State of Connecticut, have invented certain new and usefulImprovements in Rotary Pumps; and I do hereby declare that the followingis a full, clear, and exact description of the saine, reference beinghad to the annexed drawings, making a part of this specification, and tothe letters and figures of reference lnarked thereon.

Figure l ofthe drawings is a side elevation of my invention, partly insection, with oney the outer casing or shell of the pump, havingacylindrical interior chamber.

I have shown in the drawings my invention as applied to a double-actingpump, the chambers being double, as shown. at B C, each of whichchambers is provided with the usual feed-pipe, a, containing check-valveb. A shaft, D, passes horizontally through the chambers B C, and has itsbearings in the sides of the shell or outer casing, A.

A rotary motion may be imparted to the shaft D by a suitablecrank-handle connected thereto, or by other desirable means, such asbelts and pulleys, or suitable gearing.

To the shaft D may be keyed or otherwise rigidly connected cranks E,which carry rollers o d, of different diameters, as more fully shown inFig. l. The peripheries of the rollers c d bear against the interiorface of aring, F,revolving eccentrically within the chambers B C'. Eachring F is composed of two sections, e f, which form respectively theouter and inner peripheries thereof. Between the sections e fis placed apacking, g, of indiarubber or other like material, and against or A overthe edges of the packing are iiat metal rings or bands h, which are keptin contact with the interior sides of the chambers B C by the elasticpacking g, thereby taking up the frictional wear of the metal rings orbands. A

discharge, t', communicates with each 0f the chambers B C, over which islocated or placed 6o a cut-0E valve, G, held open by a suitablel spring,It. The lower end of the valve G is pivoted to the casing A, and isformed hollow, so as to contain a filling or packing, l, of rubberv orother like material, and over the edges u of this packing are placedmetal plates m. These plates, as they wear from frictional contact withthe interiorl sides of the casing or chambers, are forced up in contacttherewith at all times by the elasticity of the packing, 7o

thereby acting, the same as the meta-l rings or bands h and packing g,for taking up the wear.

Attached to the free end of the valve G is a shoe,n, concave upon itsface to fit or correspond with the convexity of the ring F.

When the shaft D is revolved each crank E moves with it, and byfrictional contact of the rollers c d with the interior of the ring F,and frictional contact with the outer periphery of the ring with theinterior of the cham- 8o ber of the pump, said ring is carried aroundwith the crank, and at the same time revolves upon its own axis, therebybringing the entire periphery of the ring in contact with the i11-terior of the pump-chamber during a complete S 5 revolution, and thuspreventing wear on one portion of the ring more than another. VThe wateris drawn up and discharged in the same manner as in all rotary pumps ofthis class,

the ring F, as it moves around the interior of 9o the pump-chamber witha rolling cont-act, drawing the water up through the feed-pipe a anddriving it around and out through the discharge fi, the valve G being,closed when the ring F is in the position as represented in dottedlines.

Having now fully described my invention, what l claim as new, and desireto secure by Letters Patent, is-

1. In a rotary pump, the shaft D, having roo connected thereto crank E,carrying rollers c d,

in combination with the rings F, consisting of Y the sections of,packing g, and bauds h, subhereunto subscribed my name in the presencestantally as and for the purpose set forth. of two witnesses.

2. In :L rotary pump, the combination, with the crank E, carryng rollersc d, and ring F, JOHN MITCHELL TAYLOR.

5 of the eut-off valve G, containing packing l and plates m,substantially as and for the pur Witnesses:

FRANK E. HYDE, SAML. O. CHURCH.

pose set forth.

In testimony that I claim the above I have

